HOTCOLOR Replacement for Lexmark 36XL 37XL Ink Cartridge for Lexmark x3650 x4650 x5650 x5650es x6650 x6675 Z2420 Printer (2 Black 1 Color) 1.Contents: 3Pack - 36XL Black Print Cartridge 18C2170 -2PK ; 37XL Tri-Color Ink Cartridge 18C2180 -1PK 2.# 36XL 37XL Ink Cartridge work for Lexmark x3650 x4650 x5650 x5650es x6650 x6675 Z2420 Printer 3.Page Yield: 36XL Black 37XL Color Per Ink Cartridge Up to 500 Pages (at 5% coverage) 4. Type: HOTCOLOR (ISO 9001 certified facility) Remanufactured Ink Cartridge for Lexmark 36XL Black 37XL Tri-color Inkjet Cartridges LEX18C2249 18C2170 18C2180 ; Not made by Lexmark. 5.Guarantee: 120 days quality warranty.If there is any problem,DO NOT hesitate to contact us.